// Copyright (c) 2018, Yubico AB
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package com.yubico.webauthn.data;

import java.util.Collections;
import java.util.Set;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Value;


/**
 * Contains <a href="https://www.w3.org/TR/2019/PR-webauthn-20190117/#client-extension-output">client extension
 * outputs</a> from a
 * <code>navigator.credentials.create()</code> operation.
 *
 * <p>
 * Note that there is no guarantee that any extension input present in {@link AssertionExtensionInputs} will have a
 * corresponding output present here.
 * </p>
 *
 * <p>
 * The authenticator extension outputs are contained in the {@link AuthenticatorData} structure.
 * </p>
 *
 * @see <a href="https://www.w3.org/TR/2019/PR-webauthn-20190117/#extensions">§9. WebAuthn Extensions</a>
 */
@Value
@AllArgsConstructor(access = AccessLevel.PRIVATE)
@Builder(toBuilder = true)
public class ClientRegistrationExtensionOutputs implements ClientExtensionOutputs {

    @Override
    public Set<String> getExtensionIds() {
        return Collections.emptySet();
    }

}
